(Luận văn) study to assessment of wastewater in nui phao mining company limited, ha thuong commune, dai tu district, thainguyen province

THAI NGUYEN UNIVERSITY UNIVERSITY OF AGRICULTURE AND FORESTRY NGUYEN QUYNH ANH STUDY TO ASSESSMENT OF WASTEWATER IN NUI PHAO MINING COMPANY LIMITED, HA THUONG COMMUNE, DAI TU DISTRICT, THAI NGUYEN PROVINCE BACHELOR THESIS Study mode : Full-time Major : Environmental cience and Management Faculty : Advanced Education Program Batch : 2017 - 2021 Thai Nguyen, 2021 Thai Nguyen University of Agriculture and Forestry Degree Program Bachelor of Environmental Science and Management Student name NGUYEN QUYNH ANH Student ID DTN1754290009 Thesis Title Study to assessment of wastewater in Nui Phao Mining Company Limited, Ha Thuong commune, Dai Tu district, ThaiNguyen province Supervisor (s) Dr Nguyen Thanh Hai Supervisor’s signature (s) Abstract: The purpose of this study is to survey wastewater of Nui Phao Mining Company in first months of 2021 periods The most goals were to evaluate the current status of wastewater in Nui Phao Mining Company and to propose a few estimations to diminish water contamination as well as to diminish the release of wastewater into clean water sources A considerable amount of wastewater must be treated and released to the right location within the company The bio-digester-treated influent significantly reduced water quality parameters such as natural oxygen demands (BOD), chemical oxygen demands (COD), ammoniac nitrogen (NH3-N), and added to suspended solids (TSS) The corporation has started building a wastewater treatment system that can effectively process wastewater and oversee wastes release at the expo The ii basic arrangements are developed after examining the situation within the production plant In terms of management, the corporation should follow tight procedures for trash treatment and wastewater discharge into the environment When it comes to innovation agreements, the corporation has chosen appropriate options Keywords: Wastewater, treatment, discharge, Nui Phao Mining, pollution Number of pages 66 Date of submission November , 2021 th iii ACKNOWLEDGEMENT I would like to express my heartfelt gratitude, Dr Nguyen Thanh Hai and Mr Truong The Manh, for guiding me through my studies at Nui Phao Company Their insightful comments, suggestions, support, and participation in my graduate thesis learning process were quite helpful I want to express my gratitude to all of the presenters who eagerly shared important information about water treatment with the entire class I'd also like to express my gratitude to my family and friends, who have always supported and encouraged me throughout my academic career I'd like to thank Thai Nguyen University of Agriculture and Forestry, as well as the coordinators and program managers, for their help and support I would like to take this time to thank my classmates for their unwavering support, ambitious direction, invaluable constructive criticism, and kind advise during this semester I am grateful to them for providing their honest and enlightening perspectives on a variety of topics connected to my thesis Finally, I would like to express my gratitude to all who took part in my survey and willingly shared their time during the interviewing process I'd like to express my gratitude to my loved ones for their unwavering support throughout the process, both in terms of keeping me calm and assisting me in putting the puzzle pieces together Thank you all very much! Sincerely yours iv TABLE OF CONTENT LIST OF FIGURE .2 LIST OF ABBREVIATIONS AND ACRONYMS PART I INTRODUCTION .4 1.1 Research rationale .4 1.2 Research’s objectives 1.3 Research questions 1.4 Limitations 1.5 Definitions PART II LITERATURE REVIEW .7 2.1 Regulations of wastewater management 2.2 Scientific background .8 2.2.1 Related definitions 2.2.2 Water quality assessment 2.3 Empirical background 12 2.3.1 Water resources and water pollution in the world 12 2.3.2 Studies on water quality in Vietnam 14 2.4 Study review .16 2.4.1 The general information of Nui Phao Company 16 2.4.2 The name of sources and locations of receiving wastewater from Nui Phao Company 17 2.4.3 The natural conditions of wastewater discharge area 18 2.5 Industrial wastewater 24 2.5.1 Inorganic industrial wastewater .24 v 2.5.2 Organic industrial wastewater 24 2.6 Wastewater treatment technology system of Nui Phao Mining and Processing Co., Ltd 25 2.6.1 Overview of the collection, treatment and discharge system of Nui Phao Mineral Exploiting and Processing .25 2.6.2 Wastewater collection and treatment technology 26 2.6.3 Wastewater collection and treatment technology at the outlet DP3 39 PART III METHODS .41 3.1 Object and scope of study 41 3.2 Location and time 41 3.3 Materials .41 3.4 Study content 41 3.4.1 Basic characteristics of Nui Phao Mining Company Limited 41 3.4.2 Assessment situation of wastewater quality in the industrial zone 41 3.4.3 Proposal of a number of solutions to reduce pollution and effects of wastewater to surrounding environment 41 3.5 Methods .42 3.5.1 Sampling site 42 3.5.2 Secondary data collection method 42 3.5.3 Water analysis 42 3.5.4 Data processing, analyzing, synthesizing and assessing data methods 43 PART IV RESULT AND DISCUSSION 44 4.1 General information about wastewater treatment system 44 4.1.1 The wastewater system in Nui Phao Mining Company Limited 46 vi 4.1.2 The situation of wastewater treatment of Nui Phao Mining Company Limited 48 4.2 Assessment of current situation of wastewater in Nui Phao Mining Company Limited 49 4.2.1 Current situation of wastewater in Nui Phao Mining Company Limited 49 4.2.2 Assessment of the impact of wastewater of Nui Phao Company to local people 56 4.3 Discussion 58 PART V CONCLUSION AND RECOMMENDATION 61 5.1 Conclusion 61 5.2 Recommendation 61 5.2.1 Management solutions 61 5.2.2 Technological solutions .62 REFERENCES .64 APPENDICES 67 vii LIST OF TABLES Table 1: The coordinates of the discharge points of Nui Phao Mining 17 Table 2: The monthly average rainfall in 2017 20 Table 3: Category parameters of wastewater treatment plant .28 Table 4: Current of wastewater collect, treatment 46 Table 5: Wastewater quality in the first months of 2021 at OTC 50 Table 6: Wastewater quality in the first months of 2021 at STC 51 Table 7: Wastewater quality in the first months of 2021 at PTP 53 Table 8: Wastewater quality in the first months of 2021 at DP2 54 Table 9: The effect of wastewater in Nui Phao Company to agriculture production and the health of people living around there 56 Table 10: The impact of wastewater in Nui Phao Company to agriculture production and the health of people living around there 57 Table 11: Wastewater quality observation program is being implemented at Nui Phao Mining 62 LIST OF FIGURE Figure Map of geographical location of Nui Phao mine 16 Figure The location of Nui Phao Mining area .18 Figure Stream system in Dai Tu area 22 Figure Diagram of wastewater collection, treatment and drainage .25 Figure Flowchart of technology for collection, treatment and drainage of DP2 26 Figure Diagram of technology for collection and drainage of DP3 39 Figure Map of the main area of Nui Phao mine 45 Figure Map of discharge points 48 LIST OF ABBREVIATIONS AND ACRONYMS COD : Chemical Oxygen Demand TDS : Total Dissolved Solids TSS : Total Suspended Solids BOD : Biochemical Oxygen Demand DO : Dissolved Oxygen NPM : Nui Phao Mining DP : Discharge point COND : Conductivity TSF-SP : Tailings Storage Facility-Sediment Pond WDSP : Waste Dump Sediment Pond EIA : Environmental Impact Assessment PSSP : Plant Site Sediment Pond STC : Sulfide Tailing Cell OTC : Oxide Tailing Cell NWD : North Waste Dump WWTP : Wastewater Treatment Plant